# US 2022/0031902 A1 · Dental/medical operatory ventilation system

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- Number: US 2022/0031902 A1
- Document ID: US20220031902A1
- Status: Published application
- Kind: A1
- Application number: 17/300,492
- Filed: 2021-07-19
- Published: 2022-02-03
- Earliest claimed: 2020-07-30
- Inventors: Bradley Evan Cohn
- Web page: https://patentgrep.com/patent/US20220031902A1

## CPC

- A61L 9/122: {comprising a fan}
- A61L 9/01: Deodorant compositions {(compositions released by contact with a liquid A61L9/05)}
- A61L 9/015: using gaseous or vaporous substances, e.g. ozone (A61L9/20 takes precedence {; evaporation in general B01B1/005})
- A61G 15/10: Parts, details or accessories (A61G15/14 takes precedence; dental instruments A61C)
- A61L 2103/15: Laboratory, medical or dentistry appliances, e.g. catheters or sharps
- A61L 2209/11: Apparatus for controlling air treatment
- A61L 2209/12: Lighting means
- A61L 2209/15: Supporting means, e.g. stands, hooks, holes for hanging
- A61L 2209/212: Use of ozone, e.g. generated by UV radiation or electrical discharge
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)

## Abstract

A ventilation system for removal of aerosols including bacteria and viruses such as the COVID-19 Coronavirus, and airborne debris from dental/medical operatories is provided. This ventilation system is comprised of (1) a stationary hood, secured at a specific distance above a patient that pulls contaminated air from the operatory, (2) ducting that carries the contaminated air away from the operatory, (3) a UV Ozonator that treats the air and cleans it of viral and bacterial aerosols and airborne debris before (4) expelling it to the outside through a specified length of terminal duct. The combination of certain embodiments in this invention create an effective means of aerosol and airborne debris removal in dental/medical operatories or other indoor spaces.

## Claims

### Claim 1

An effective ventilation system for dental/medical operatories, or other indoor spaces comprised of:
a ventilation hood, a UV Ozonator, and 8″ to 12″ duct;
a 54″ or 60″ hood is placed no higher than 88 inches from the floor;
a hood should be at least 1200 cfm to effectively remove contaminated aerosols;
hood should be placed above the patient chair;
exhaust air travels through the 8″ to 12″ duct;
air passes through the UV Ozonator effectively destroying unwanted contaminants;
air continues through 15′ of 8″to 12″ duct and is treated and cleaned of contaminants;
treated air is expelled to the outside;
placement of the hood does not hinder movement about the room.